Have just had this email.
I apologize for the inconvenience caused. There seems to be some issue going on with one of our server due to which the images are not appearing on the listings. I have reported this issue to our engineers and they are trying to rectify it as soon as possible. Unfortunately, I don't have any ETA about this issue at this moment.
I once again apologize for the inconvenience and appreciate your patience in this regard.
Thank you,
Auctiva Support